Update leaseTimeMs logic

Author: ivandika3

hadoop-ozone/common/src/main/java/org/apache/hadoop/ozone/om/OmConfig.java

@@ -167,7 +167,8 @@ public class OmConfig extends ReconfigurableConfig {
       type = ConfigType.LONG,
       tags = {ConfigTag.OM, ConfigTag.PERFORMANCE, ConfigTag.HA, ConfigTag.RATIS},
       description = "If the log lag between leader OM and follower OM is larger " +
-          "than this number, the follower OM is not up-to-date."
+          "than this number, the follower OM is not up-to-date. Setting this to -1 " +
+          "allows read to return immediately (infinity log lag)."
   )
   private long followerReadLocalLeaseLogLimit;
 
@@ -178,7 +179,8 @@ public class OmConfig extends ReconfigurableConfig {
       tags = {ConfigTag.OM, ConfigTag.PERFORMANCE, ConfigTag.HA, ConfigTag.RATIS},
       description = " If the lag time Ms between leader OM and follower OM is larger " +
           "than this number, the follower OM is not up-to-date. " +
-          "By default, it's set to Ratis RPC timeout value."
+          "By default, it's set to Ratis RPC timeout value." +
+          "Setting this to -1 allows read to return immediately."
   )
   private long followerReadLocalLeaseTimeMs;
 

hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/protocolPB/OzoneManagerProtocolServerSideTranslatorPB.java

@@ -391,7 +391,7 @@ boolean allowFollowerReadLocalLease(Division ratisDivision, long leaseLogLimit,
       return false; // no leader
     }
 
-    if (leaseTimeMsLimit != -1 && leaderInfo.getLastRpcElapsedTimeMs() > leaseTimeMsLimit) {
+    if (leaseTimeMsLimit >= -1 && leaderInfo.getLastRpcElapsedTimeMs() > leaseTimeMsLimit) {
       LOG.debug("FollowerRead Local Lease not allowed: Local lease Time expired. ");
       ozoneManager.getMetrics().incNumFollowerReadLocalLeaseFailTime();
       return false; // lease time expired